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Title: Antifogging abilities of model nanotextures

Journal Article · · Nature Materials
DOI:https://doi.org/10.1038/nmat4868· OSTI ID:1346754

Nanometre-scale features with special shapes impart a broad spectrum of unique properties to the surface of insects. These properties are essential for the animal’s survival, and include the low light reflectance of moth eyes, the oil repellency of springtail carapaces and the ultra-adhesive nature of palmtree bugs. Antireflective mosquito eyes and cicada wings are also known to exhibit some antifogging and self-cleaning properties. In all cases, the combination of small feature size and optimal shape provides exceptional surface properties. In this work, we investigate the underlying antifogging mechanism in model materials designed to mimic natural systems, and explain the importance of the texture’s feature size and shape. While exposure to fog strongly compromises the water-repellency of hydrophobic structures, this failure can be minimized by scaling the texture down to nanosize. Furthermore, this undesired effect even becomes non-measurable if the hydrophobic surface consists of nanocones, which generate antifogging efficiency close to unity and water departure of droplets smaller than 2 μm.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704
OSTI ID:
1346754
Report Number(s):
BNL-113650-2017-JA; KC0403020
Journal Information:
Nature Materials, Vol. 16, Issue 6; ISSN 1476-1122
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 260 works
Citation information provided by
Web of Science

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Cited By (43)

Thin Film Condensation on Nanostructured Surfaces journal February 2018
The Flexible Conical Lamella: A Bio-Inspired Open System for the Controllable Liquid Manipulation journal May 2018
Bio-Inspired Superhydrophobic Closely Packed Aligned Nanoneedle Architectures for Enhancing Condensation Heat Transfer journal June 2018
Nanogenerators with Superwetting Surfaces for Harvesting Water/Liquid Energy journal January 2020
Recent Progress in Bionic Condensate Microdrop Self-Propelling Surfaces journal August 2017
Bioinspired Dynamic Wetting on Multiple Fibers journal October 2017
Ballistic Jumping Drops on Superhydrophobic Surfaces via Electrostatic Manipulation journal January 2018
Flourishing Bioinspired Antifogging Materials with Superwettability: Progresses and Challenges journal February 2018
It's Not a Bug, It's a Feature: Functional Materials in Insects journal March 2018
Biological and Engineered Topological Droplet Rectifiers journal January 2019
Steerable Droplet Bouncing for Precise Materials Transportation journal August 2019
FDTS‐Modified SiO 2 /rGO Wrinkled Films with a Micro‐Nanoscale Hierarchical Structure and Anti‐Icing/Deicing Properties under Condensation Condition journal November 2019
The Effect of Surface Wettability and Coalescence Dynamics in Catalytic Performance and Catalyst Preparation: A Review journal February 2019
A Bioinspired, Highly Transparent Surface with Dry‐Style Antifogging, Antifrosting, Antifouling, and Moisture Self‐Cleaning Properties journal November 2018
Bioinspired Metamaterials: Multibands Electromagnetic Wave Adaptability and Hydrophobic Characteristics journal August 2019
Antifogging and Frost-Resisting Polymeric Surfaces book January 2018
Biomimetic fabrication and photoelectric properties of superhydrophobic ZnO nanostructures on flexible PDMS substrates replicated from rose petal journal January 2019
Two recipes for repelling hot water journal March 2019
Wetting transitions in droplet drying on soft materials journal October 2019
Large-scale fabrication of translucent, stretchable and durable superhydrophobic composite films journal January 2017
Bouncing dynamics of liquid drops impact on ridge structure: an effective approach to reduce the contact time journal January 2018
Effect of nano-pillared surfaces with an arrangement density gradient on droplet coalescence dynamics journal January 2018
Facile spraying fabrication of highly flexible and mechanically robust superhydrophobic F-SiO 2 @PDMS coatings for self-cleaning and drag-reduction applications journal January 2018
A robust and stretchable superhydrophobic PDMS/PVDF@KNFs membrane for oil/water separation and flame retardancy journal January 2018
Mapping the transition to superwetting state for nanotextured surfaces templated from block-copolymer self-assembly journal January 2018
Bio-inspired antifogging PDMS coupled micro-pillared superhydrophobic arrays and SiO 2 coatings journal January 2018
Fundamentals of icing and common strategies for designing biomimetic anti-icing surfaces journal January 2018
Creating glasswing butterfly-inspired durable antifogging superomniphobic supertransmissive, superclear nanostructured glass through Bayesian learning and optimization journal January 2019
Dynamics of droplets on cones: self-propulsion due to curvature gradients journal January 2019
Pick up and release of micro-objects: a motion-free method to change the conformity of a capillary contact journal January 2020
Droplet ski-jumping on an inclined macro-textured superhydrophobic surface journal September 2018
Enhanced water capture induced with electrowetting-on-dielectric (EWOD) approach journal November 2018
Size distribution theory for jumping-droplet condensation journal April 2019
Energy-based modeling of micro- and nano-droplet jumping upon coalescence on superhydrophobic surfaces journal September 2019
How merging droplets jump off a superhydrophobic surface: Measurements and model journal November 2017
Ballistics of self-jumping microdroplets journal January 2019
Hydrophilic directional slippery rough surfaces for water harvesting journal March 2018
Programmable wettability on photocontrolled graphene film journal September 2018
The cold Leidenfrost regime journal June 2019
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Wetting transitions in droplet drying on soft materials text January 2019
Two recipes for repelling hot water text January 2018
Is dropwise condensation feasible? A review on surface modifications for continuous dropwise condensation and a profitability analysis journal March 2019

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